1 # acx_nlnetlabs.m4 - common macros for configure checks
2 # Copyright 2009, Wouter Wijngaards, NLnet Labs.
6 # 2012-02-09 Fix AHX_MEMCMP_BROKEN with undef in compat/memcmp.h.
7 # 2012-01-20 Fix COMPILER_FLAGS_UNBOUND for gcc 4.6.2 assigned-not-used-warns.
8 # 2011-12-05 Fix getaddrinfowithincludes on windows with fedora16 mingw32-gcc.
9 # Fix ACX_MALLOC for redefined malloc error.
10 # Fix GETADDRINFO_WITH_INCLUDES to add -lws2_32
11 # 2011-11-10 Fix FLTO test to not drop a.out in current directory.
12 # 2011-11-01 Fix FLTO test for llvm on Lion.
13 # 2011-08-01 Fix nonblock test (broken at v13).
14 # 2011-08-01 Fix autoconf 2.68 warnings
15 # 2011-06-23 Add ACX_CHECK_FLTO to check -flto.
16 # 2010-08-16 Fix FLAG_OMITTED for AS_TR_CPP changes in autoconf-2.66.
17 # 2010-07-02 Add check for ss_family (for minix).
18 # 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS.
19 # 2010-03-01 Fix RPATH using CONFIG_COMMANDS to run at the very end.
20 # 2010-02-18 WITH_SSL outputs the LIBSSL_LDFLAGS, LIBS, CPPFLAGS seperate, -ldl
21 # 2010-02-01 added ACX_CHECK_MEMCMP_SIGNED, AHX_MEMCMP_BROKEN
22 # 2010-01-20 added AHX_COONFIG_STRLCAT
23 # 2009-07-14 U_CHAR detection improved for windows crosscompile.
24 # added ACX_FUNC_MALLOC
25 # fixup some #if to #ifdef
26 # NONBLOCKING test for mingw crosscompile.
27 # 2009-07-13 added ACX_WITH_SSL_OPTIONAL
28 # 2009-07-03 fixup LDFLAGS for empty ssl dir.
30 # Automates some of the checking constructs. Aims at portability for POSIX.
31 # Documentation for functions is below.
33 # the following macro's are provided in this file:
34 # (see below for details on each macro).
36 # ACX_ESCAPE_BACKSLASH - escape backslashes in var for C-preproc.
37 # ACX_RSRC_VERSION - create windows resource version number.
38 # ACX_CHECK_COMPILER_FLAG - see if cc supports a flag.
39 # ACX_CHECK_ERROR_FLAGS - see which flag is -werror (used below).
40 # ACX_CHECK_COMPILER_FLAG_NEEDED - see if flags make the code compile cleanly.
41 # ACX_DEPFLAG - find cc dependency flags.
42 # ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX.
43 # ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax.
44 # ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax.
45 # ACX_CHECK_FLTO - see if cc supports -flto and use it if so.
46 # ACX_LIBTOOL_C_ONLY - create libtool for C only, improved.
47 # ACX_TYPE_U_CHAR - u_char type.
48 # ACX_TYPE_RLIM_T - rlim_t type.
49 # ACX_TYPE_SOCKLEN_T - socklen_t type.
50 # ACX_TYPE_IN_ADDR_T - in_addr_t type.
51 # ACX_TYPE_IN_PORT_T - in_port_t type.
52 # ACX_ARG_RPATH - add --disable-rpath option.
53 # ACX_WITH_SSL - add --with-ssl option, link -lcrypto.
54 # ACX_WITH_SSL_OPTIONAL - add --with-ssl option, link -lcrypto,
55 # where --without-ssl is also accepted
56 # ACX_LIB_SSL - setup to link -lssl.
57 # ACX_SYS_LARGEFILE - improved sys_largefile, fseeko, >2G files.
58 # ACX_CHECK_GETADDRINFO_WITH_INCLUDES - find getaddrinfo, portably.
59 # ACX_FUNC_DEPRECATED - see if func is deprecated.
60 # ACX_CHECK_NONBLOCKING_BROKEN - see if nonblocking sockets really work.
61 # ACX_MKDIR_ONE_ARG - determine mkdir(2) number of arguments.
62 # ACX_FUNC_IOCTLSOCKET - find ioctlsocket, portably.
63 # ACX_FUNC_MALLOC - check malloc, define replacement .
64 # AHX_CONFIG_FORMAT_ATTRIBUTE - config.h text for format.
65 # AHX_CONFIG_UNUSED_ATTRIBUTE - config.h text for unused.
66 # AHX_CONFIG_FSEEKO - define fseeko, ftello fallback.
67 # AHX_CONFIG_RAND_MAX - define RAND_MAX if needed.
68 # AHX_CONFIG_MAXHOSTNAMELEN - define MAXHOSTNAMELEN if needed.
69 # AHX_CONFIG_IPV6_MIN_MTU - define IPV6_MIN_MTU if needed.
70 # AHX_CONFIG_SNPRINTF - snprintf compat prototype
71 # AHX_CONFIG_INET_PTON - inet_pton compat prototype
72 # AHX_CONFIG_INET_NTOP - inet_ntop compat prototype
73 # AHX_CONFIG_INET_ATON - inet_aton compat prototype
74 # AHX_CONFIG_MEMMOVE - memmove compat prototype
75 # AHX_CONFIG_STRLCAT - strlcat compat prototype
76 # AHX_CONFIG_STRLCPY - strlcpy compat prototype
77 # AHX_CONFIG_GMTIME_R - gmtime_r compat prototype
78 # AHX_CONFIG_W32_SLEEP - w32 compat for sleep
79 # AHX_CONFIG_W32_USLEEP - w32 compat for usleep
80 # AHX_CONFIG_W32_RANDOM - w32 compat for random
81 # AHX_CONFIG_W32_SRANDOM - w32 compat for srandom
82 # AHX_CONFIG_W32_FD_SET_T - w32 detection of FD_SET_T.
83 # ACX_CFLAGS_STRIP - strip one flag from CFLAGS
84 # ACX_STRIP_EXT_FLAGS - strip extension flags from CFLAGS
85 # AHX_CONFIG_FLAG_OMITTED - define omitted flag
86 # AHX_CONFIG_FLAG_EXT - define omitted extension flag
87 # AHX_CONFIG_EXT_FLAGS - define the stripped extension flags
88 # ACX_CHECK_MEMCMP_SIGNED - check if memcmp uses signed characters.
89 # AHX_MEMCMP_BROKEN - replace memcmp func for CHECK_MEMCMP_SIGNED.
90 # ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family
93 dnl Escape backslashes as \\, for C:\ paths, for the C preprocessor defines.
94 dnl for example, ACX_ESCAPE_BACKSLASH($from_var, to_var)
95 dnl $1: the text to change.
97 AC_DEFUN([ACX_ESCAPE_BACKSLASH], [$2="`echo $1 | sed -e 's/\\\\/\\\\\\\\/g'`"
100 dnl Calculate comma separated windows-resource numbers from package version.
101 dnl Picks the first three(,0) or four numbers out of the name.
102 dnl $1: variable for the result
103 AC_DEFUN([ACX_RSRC_VERSION],
104 [$1=[`echo $PACKAGE_VERSION | sed -e 's/^[^0-9]*\([0-9]\)[^0-9]*\([0-9]\)[^0-9]*\([0-9]\)[^0-9]*\([0-9]\).*$/\1,\2,\3,\4/' -e 's/^[^0-9]*\([0-9]\)[^0-9]*\([0-9]\)[^0-9]*\([0-9]\)[^0-9]*$/\1,\2,\3,0/' `]
107 dnl Routine to help check for compiler flags.
108 dnl Checks if the compiler will accept the flag.
109 dnl $1: the flag without a - in front, so g to check -g.
110 dnl $2: executed if yes
111 dnl $3: executed if no
112 AC_DEFUN([ACX_CHECK_COMPILER_FLAG],
114 AC_REQUIRE([AC_PROG_CC])
115 AC_MSG_CHECKING(whether $CC supports -$1)
116 cache=`echo $1 | sed 'y%.=/+-%___p_%'`
117 AC_CACHE_VAL(cv_prog_cc_flag_$cache,
119 echo 'void f(){}' >conftest.c
120 if test -z "`$CC $CPPFLAGS $CFLAGS -$1 -c conftest.c 2>&1`"; then
121 eval "cv_prog_cc_flag_$cache=yes"
123 eval "cv_prog_cc_flag_$cache=no"
125 rm -f conftest conftest.o conftest.c
127 if eval "test \"`echo '$cv_prog_cc_flag_'$cache`\" = yes"; then
138 dnl setup flags for ACX_CHECK_COMPILER_FLAG_NEEDED
139 dnl ERRFLAG: result, compiler flag to turn warnings into errors
140 AC_DEFUN([ACX_CHECK_ERROR_FLAGS],
142 ACX_CHECK_COMPILER_FLAG(Werror, [ERRFLAG="-Werror"], [ERRFLAG="-errwarn"])
143 ACX_CHECK_COMPILER_FLAG(Wall, [ERRFLAG="$ERRFLAG -Wall"],
144 [ERRFLAG="$ERRFLAG -errfmt"])
147 dnl Routine to help check for needed compiler flags.
149 dnl $2: the includes and code
150 dnl $3: if the given code only compiles with the flag, execute argument 3
151 dnl $4: if the given code compiles without the flag, execute argument 4
152 dnl $5: with and without flag the compile fails, execute argument 5.
153 AC_DEFUN([ACX_CHECK_COMPILER_FLAG_NEEDED],
155 AC_REQUIRE([AC_PROG_CC])
156 AC_REQUIRE([ACX_CHECK_ERROR_FLAGS])
157 AC_MSG_CHECKING(whether we need $1 as a flag for $CC)
159 dnl cache=`echo $1 | sed 'y%.=/+- %___p__%'`
160 AC_CACHE_VAL(cv_prog_cc_flag_needed_$cache,
162 echo '$2' > conftest.c
163 echo 'void f(){}' >>conftest.c
164 if test -z "`$CC $CPPFLAGS $CFLAGS $ERRFLAG -c conftest.c 2>&1`"; then
165 eval "cv_prog_cc_flag_needed_$cache=no"
168 if test -z "`$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`"; then
169 eval "cv_prog_cc_flag_needed_$cache=yes"
171 eval "cv_prog_cc_flag_needed_$cache=fail"
172 #echo 'Test with flag fails too!'
174 #echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1"
175 #echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`
180 rm -f conftest conftest.c conftest.o
182 if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = yes"; then
187 if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = no"; then
189 #echo 'Test with flag is no!'
191 #echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1"
192 #echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`
197 AC_MSG_RESULT(failed)
204 dnl Check for CC dependency flag
205 dnl DEPFLAG: set to flag that generates dependencies.
206 AC_DEFUN([ACX_DEPFLAG],
208 AC_MSG_CHECKING([$CC dependency flag])
209 echo 'void f(){}' >conftest.c
210 if test "`$CC -MM conftest.c 2>&1`" = "conftest.o: conftest.c"; then
213 if test "`$CC -xM1 conftest.c 2>&1`" = "conftest.o: conftest.c"; then
216 DEPFLAG="-MM" # dunno do something
219 AC_MSG_RESULT($DEPFLAG)
224 dnl Determine flags that gives POSIX and BSD functionality.
225 dnl CFLAGS is modified for the result.
226 AC_DEFUN([ACX_DETERMINE_EXT_FLAGS_UNBOUND],
228 ACX_CHECK_COMPILER_FLAG(std=c99, [C99FLAG="-std=c99"])
229 ACX_CHECK_COMPILER_FLAG(xc99, [C99FLAG="-xc99"])
231 AC_CHECK_HEADERS([getopt.h time.h],,, [AC_INCLUDES_DEFAULT])
233 ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE,
235 #include "confdefs.h"
238 #include <sys/time.h>
255 const char* str = NULL;
258 t = ctime_r(&time, buf);
261 a = getopt(2, opts, "a");
263 str = gai_strerror(0);
264 if(str && t && tv.tv_usec && msg.msg_control)
268 ], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE"])
270 ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE,
272 #include "confdefs.h"
275 #include <sys/time.h>
292 const char* str = NULL;
295 t = ctime_r(&time, buf);
298 a = getopt(2, opts, "a");
300 str = gai_strerror(0);
301 if(str && t && tv.tv_usec && msg.msg_control)
305 ], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE"])
307 ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG,
315 ], [CFLAGS="$CFLAGS $C99FLAG"])
317 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_BSD_SOURCE,
326 ], [CFLAGS="$CFLAGS -D_BSD_SOURCE"])
328 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE,
330 #include <netinet/in.h>
333 struct in6_pktinfo inf;
334 int a = (int)sizeof(inf);
337 ], [CFLAGS="$CFLAGS -D_GNU_SOURCE"])
339 # check again for GNU_SOURCE for setresgid. May fail if setresgid
340 # is not available at all. -D_FRSRESGID is to make this check unique.
341 # otherwise we would get the previous cached result.
342 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE -D_FRSRESGID,
347 int a = setresgid(0,0,0);
348 a = setresuid(0,0,0);
351 ], [CFLAGS="$CFLAGS -D_GNU_SOURCE"])
353 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_POSIX_C_SOURCE=200112,
355 #include "confdefs.h"
366 const char* str = NULL;
367 t = ctime_r(&time, buf);
368 str = gai_strerror(0);
373 ], [CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112"])
375 ACX_CHECK_COMPILER_FLAG_NEEDED(-D__EXTENSIONS__,
377 #include "confdefs.h"
380 #include <sys/time.h>
395 a = getopt(2, opts, "a");
401 ], [CFLAGS="$CFLAGS -D__EXTENSIONS__"])
403 ])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND
405 dnl Check if CC supports -flto.
406 dnl in a way that supports clang and suncc (that flag does something else,
407 dnl but fails to link). It sets it in CFLAGS if it works.
408 AC_DEFUN([ACX_CHECK_FLTO],
409 [AC_MSG_CHECKING([if $CC supports -flto])
411 CFLAGS="$CFLAGS -flto"
412 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
413 if $CC $CFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then
419 rm -f conftest conftest.c conftest.o
420 ], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)])
423 dnl Check the printf-format attribute (if any)
424 dnl result in HAVE_ATTR_FORMAT.
425 dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE.
426 AC_DEFUN([ACX_CHECK_FORMAT_ATTRIBUTE],
427 [AC_REQUIRE([AC_PROG_CC])
428 AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "format" attribute)
429 AC_CACHE_VAL(ac_cv_c_format_attribute,
430 [ac_cv_c_format_attribute=no
433 void f (char *format, ...) __attribute__ ((format (printf, 1, 2)));
434 void (*pf) (char *format, ...) __attribute__ ((format (printf, 1, 2)));
438 [ac_cv_c_format_attribute="yes"],
439 [ac_cv_c_format_attribute="no"])
442 AC_MSG_RESULT($ac_cv_c_format_attribute)
443 if test $ac_cv_c_format_attribute = yes; then
444 AC_DEFINE(HAVE_ATTR_FORMAT, 1, [Whether the C compiler accepts the "format" attribute])
446 ])dnl End of ACX_CHECK_FORMAT_ATTRIBUTE
448 dnl Setup ATTR_FORMAT config.h parts.
449 dnl make sure you call ACX_CHECK_FORMAT_ATTRIBUTE also.
450 AC_DEFUN([AHX_CONFIG_FORMAT_ATTRIBUTE],
452 #ifdef HAVE_ATTR_FORMAT
453 # define ATTR_FORMAT(archetype, string_index, first_to_check) \
454 __attribute__ ((format (archetype, string_index, first_to_check)))
455 #else /* !HAVE_ATTR_FORMAT */
456 # define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */
457 #endif /* !HAVE_ATTR_FORMAT */
460 dnl Check how to mark function arguments as unused.
461 dnl result in HAVE_ATTR_UNUSED.
462 dnl Make sure you include AHX_CONFIG_UNUSED_ATTRIBUTE also.
463 AC_DEFUN([ACX_CHECK_UNUSED_ATTRIBUTE],
464 [AC_REQUIRE([AC_PROG_CC])
465 AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "unused" attribute)
466 AC_CACHE_VAL(ac_cv_c_unused_attribute,
467 [ac_cv_c_unused_attribute=no
470 void f (char *u __attribute__((unused)));
474 [ac_cv_c_unused_attribute="yes"],
475 [ac_cv_c_unused_attribute="no"])
478 dnl Setup ATTR_UNUSED config.h parts.
479 dnl make sure you call ACX_CHECK_UNUSED_ATTRIBUTE also.
480 AC_DEFUN([AHX_CONFIG_UNUSED_ATTRIBUTE],
483 # define ATTR_UNUSED(x) x
484 #elif defined(__cplusplus)
485 # define ATTR_UNUSED(x)
486 #elif defined(HAVE_ATTR_UNUSED)
487 # define ATTR_UNUSED(x) x __attribute__((unused))
488 #else /* !HAVE_ATTR_UNUSED */
489 # define ATTR_UNUSED(x) x
490 #endif /* !HAVE_ATTR_UNUSED */
493 AC_MSG_RESULT($ac_cv_c_unused_attribute)
494 if test $ac_cv_c_unused_attribute = yes; then
495 AC_DEFINE(HAVE_ATTR_UNUSED, 1, [Whether the C compiler accepts the "unused" attribute])
499 dnl Pre-fun for ACX_LIBTOOL_C_ONLY
500 AC_DEFUN([ACX_LIBTOOL_C_PRE], [
501 # skip these tests, we do not need them.
502 AC_DEFUN([AC_PROG_F77], [:])
503 AC_DEFUN([AC_PROG_FC], [:])
504 AC_DEFUN([AC_PROG_CXX], [:])
505 AC_DEFUN([AC_PROG_CXXCPP], [:])
506 AC_DEFUN([AC_PROG_OBJC], [:])
507 AC_DEFUN([AC_PROG_OBJCCPP], [:])
508 AC_DEFUN([AC_LIBTOOL_CXX], [:])
509 AC_DEFUN([AC_LIBTOOL_F77], [:])
510 # always use ./libtool unless override from commandline (libtool=mylibtool)
511 if test -z "$libtool"; then
515 # avoid libtool max commandline length test on systems that fork slowly.
517 if echo "$host_os" | grep "sunos4" >/dev/null; then
518 lt_cv_sys_max_cmd_len=32750;
520 AC_PATH_TOOL(AR, ar, [false])
521 if test $AR = false; then
522 AC_MSG_ERROR([Cannot find 'ar', please extend PATH to include it])
526 dnl Perform libtool check, portably, only for C
527 AC_DEFUN([ACX_LIBTOOL_C_ONLY], [
528 dnl as a requirement so that is gets called before LIBTOOL
529 dnl because libtools 'AC_REQUIRE' names are right after this one, before
530 dnl this function contents.
531 AC_REQUIRE([ACX_LIBTOOL_C_PRE])
535 dnl Detect if u_char type is defined, otherwise define it.
536 AC_DEFUN([ACX_TYPE_U_CHAR],
537 [AC_CHECK_TYPE([u_char], ,
538 [AC_DEFINE([u_char], [unsigned char], [Define to 'unsigned char if not defined])], [
540 #ifdef HAVE_WINSOCK2_H
541 # include <winsock2.h>
545 dnl Detect if rlim_t type is defined, otherwise define it.
546 AC_DEFUN([ACX_TYPE_RLIM_T],
547 [AC_CHECK_TYPE(rlim_t, ,
548 [AC_DEFINE([rlim_t], [unsigned long], [Define to 'int' if not defined])], [
550 #ifdef HAVE_SYS_RESOURCE_H
551 # include <sys/resource.h>
555 dnl Detect if socklen_t type is defined, otherwise define it.
556 AC_DEFUN([ACX_TYPE_SOCKLEN_T],
558 AC_CHECK_TYPE(socklen_t, ,
559 [AC_DEFINE([socklen_t], [int], [Define to 'int' if not defined])], [
561 #ifdef HAVE_SYS_SOCKET_H
562 # include <sys/socket.h>
564 #ifdef HAVE_WS2TCPIP_H
565 # include <ws2tcpip.h>
569 dnl Detect if in_addr_t type is defined, otherwise define it.
570 AC_DEFUN([ACX_TYPE_IN_ADDR_T],
571 [ AC_CHECK_TYPE(in_addr_t, [], [AC_DEFINE([in_addr_t], [uint32_t], [in_addr_t])], [
573 #ifdef HAVE_SYS_TYPES_H
574 # include <sys/types.h>
576 #ifdef HAVE_NETINET_IN_H
577 # include <netinet/in.h>
581 dnl Detect if in_port_t type is defined, otherwise define it.
582 AC_DEFUN([ACX_TYPE_IN_PORT_T],
583 [ AC_CHECK_TYPE(in_port_t, [], [AC_DEFINE([in_port_t], [uint16_t], [in_port_t])], [
585 #ifdef HAVE_SYS_TYPES_H
586 # include <sys/types.h>
588 #ifdef HAVE_NETINET_IN_H
589 # include <netinet/in.h>
593 dnl Add option to disable the evil rpath. Check whether to use rpath or not.
594 dnl Adds the --disable-rpath option. Uses trick to edit the ./libtool.
595 AC_DEFUN([ACX_ARG_RPATH],
598 [ --disable-rpath disable hardcoded rpath (default=enabled)],
599 enable_rpath=$enableval, enable_rpath=yes)
600 if test "x$enable_rpath" = xno; then
601 dnl AC_MSG_RESULT([Fixing libtool for -rpath problems.])
602 AC_CONFIG_COMMANDS([disable-rpath], [
603 sed < libtool > libtool-2 \
604 's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_RPATH_SED__ "/'
612 dnl Add a -R to the RUNTIME_PATH. Only if rpath is enabled and it is
613 dnl an absolute path.
614 dnl $1: the pathname to add.
615 AC_DEFUN([ACX_RUNTIME_PATH_ADD], [
616 if test "x$enable_rpath" = xyes; then
617 if echo "$1" | grep "^/" >/dev/null; then
618 RUNTIME_PATH="$RUNTIME_PATH -R$1"
623 dnl Common code for both ACX_WITH_SSL and ACX_WITH_SSL_OPTIONAL
624 dnl Takes one argument; the withval checked in those 2 functions
625 dnl sets up the environment for the given openssl path
626 AC_DEFUN([ACX_SSL_CHECKS], [
628 if test x_$withval != x_no; then
629 AC_MSG_CHECKING(for SSL)
630 if test x_$withval = x_ -o x_$withval = x_yes; then
631 withval="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr"
633 for dir in $withval; do
635 if test -f "$dir/include/openssl/ssl.h"; then
637 AC_DEFINE_UNQUOTED([HAVE_SSL], [], [Define if you have the SSL libraries installed.])
638 dnl assume /usr/include is already in the include-path.
639 if test "$ssldir" != "/usr"; then
640 CPPFLAGS="$CPPFLAGS -I$ssldir/include"
641 LIBSSL_CPPFLAGS="$LIBSSL_CPPFLAGS -I$ssldir/include"
646 if test x_$found_ssl != x_yes; then
647 AC_MSG_ERROR(Cannot find the SSL libraries in $withval)
649 AC_MSG_RESULT(found in $ssldir)
651 dnl assume /usr is already in the lib and dynlib paths.
652 if test "$ssldir" != "/usr" -a "$ssldir" != ""; then
653 LDFLAGS="$LDFLAGS -L$ssldir/lib"
654 LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir/lib"
655 ACX_RUNTIME_PATH_ADD([$ssldir/lib])
658 AC_MSG_CHECKING([for HMAC_CTX_init in -lcrypto])
659 LIBS="$LIBS -lcrypto"
660 LIBSSL_LIBS="$LIBSSL_LIBS -lcrypto"
662 int HMAC_CTX_init(void);
663 (void)HMAC_CTX_init();
666 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1,
667 [If you have HMAC_CTX_init])
670 # check if -lwsock32 or -lgdi32 are needed.
672 BAKSSLLIBS="$LIBSSL_LIBS"
674 LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32"
675 AC_MSG_CHECKING([if -lcrypto needs -lgdi32])
677 int HMAC_CTX_init(void);
678 (void)HMAC_CTX_init();
680 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1,
681 [If you have HMAC_CTX_init])
686 LIBSSL_LIBS="$BAKSSLLIBS"
688 LIBSSL_LIBS="$LIBSSL_LIBS -ldl"
689 AC_MSG_CHECKING([if -lcrypto needs -ldl])
691 int HMAC_CTX_init(void);
692 (void)HMAC_CTX_init();
694 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1,
695 [If you have HMAC_CTX_init])
699 AC_MSG_ERROR([OpenSSL found in $ssldir, but version 0.9.7 or higher is required])
705 AC_SUBST(RUNTIME_PATH)
706 # openssl engine functionality needs dlopen().
708 AC_SEARCH_LIBS([dlopen], [dl])
709 if test "$LIBS" != "$BAKLIBS"; then
710 LIBSSL_LIBS="$LIBSSL_LIBS -ldl"
713 AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT])
714 AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT])
715 AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT])
716 ])dnl End of ACX_SSL_CHECKS
718 dnl Check for SSL, where SSL is mandatory
719 dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found
720 dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS.
721 dnl Checks main header files of SSL.
723 AC_DEFUN([ACX_WITH_SSL],
725 AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname],
726 [enable SSL (will check /usr/local/ssl
727 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[
731 if test x_$withval = x_no; then
732 AC_MSG_ERROR([Need SSL library to do digital signature cryptography])
734 ACX_SSL_CHECKS($withval)
735 ])dnl End of ACX_WITH_SSL
737 dnl Check for SSL, where ssl is optional (--without-ssl is allowed)
738 dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found
739 dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS.
740 dnl Checks main header files of SSL.
742 AC_DEFUN([ACX_WITH_SSL_OPTIONAL],
744 AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname],
745 [enable SSL (will check /usr/local/ssl
746 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[
750 ACX_SSL_CHECKS($withval)
751 ])dnl End of ACX_WITH_SSL_OPTIONAL
753 dnl Setup to use -lssl
754 dnl To use -lcrypto, use the ACX_WITH_SSL setup (before this one).
755 AC_DEFUN([ACX_LIB_SSL],
757 # check if libssl needs libdl
760 AC_MSG_CHECKING([if libssl needs libdl])
761 AC_TRY_LINK_FUNC([SSL_CTX_new], [
767 AC_SEARCH_LIBS([dlopen], [dl])
768 ]) ])dnl End of ACX_LIB_SSL
770 dnl Setup to use very large files (>2Gb).
771 dnl setups fseeko and its own
772 AC_DEFUN([ACX_SYS_LARGEFILE],
775 dnl try to see if an additional _LARGEFILE_SOURCE 1 is needed to get fseeko
776 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_LARGEFILE_SOURCE=1,
780 int a = fseeko(stdin, 0, 0);
783 ], [CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE=1"])
786 dnl Check getaddrinfo.
787 dnl Works on linux, solaris, bsd and windows(links winsock).
788 dnl defines HAVE_GETADDRINFO, USE_WINSOCK.
789 AC_DEFUN([ACX_CHECK_GETADDRINFO_WITH_INCLUDES],
790 [AC_REQUIRE([AC_PROG_CC])
791 AC_MSG_CHECKING(for getaddrinfo)
792 ac_cv_func_getaddrinfo=no
800 char* (*f) () = getaddrinfo;
809 dnl this case on linux, solaris, bsd
810 [ac_cv_func_getaddrinfo="yes"
811 dnl see if on windows
812 if test "$ac_cv_header_windows_h" = "yes"; then
813 AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used])
815 LIBS="$LIBS -lws2_32"
818 dnl no quick getaddrinfo, try mingw32 and winsock2 library.
820 LIBS="$LIBS -lws2_32"
824 #ifdef HAVE_WS2TCPIP_H
825 #include <ws2tcpip.h>
829 (void)getaddrinfo(NULL, NULL, NULL, NULL);
833 ac_cv_func_getaddrinfo="yes"
834 dnl already: LIBS="$LIBS -lws2_32"
835 AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used])
839 ac_cv_func_getaddrinfo="no"
844 AC_MSG_RESULT($ac_cv_func_getaddrinfo)
845 if test $ac_cv_func_getaddrinfo = yes; then
846 AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether getaddrinfo is available])
848 ])dnl Endof AC_CHECK_GETADDRINFO_WITH_INCLUDES
850 dnl check if a function is deprecated. defines DEPRECATED_func in config.h.
851 dnl $1: function name
852 dnl $2: C-statement that calls the function.
853 dnl $3: includes for the program.
854 dnl $4: executes if yes
855 dnl $5: executes if no
856 AC_DEFUN([ACX_FUNC_DEPRECATED],
858 AC_REQUIRE([AC_PROG_CC])
859 AC_MSG_CHECKING(if $1 is deprecated)
860 cache=`echo $1 | sed 'y%.=/+-%___p_%'`
861 AC_CACHE_VAL(cv_cc_deprecated_$cache,
863 echo '$3' >conftest.c
864 echo 'void f(){ $2 }' >>conftest.c
865 if test -z "`$CC -c conftest.c 2>&1 | grep deprecated`"; then
866 eval "cv_cc_deprecated_$cache=no"
868 eval "cv_cc_deprecated_$cache=yes"
870 rm -f conftest conftest.o conftest.c
872 if eval "test \"`echo '$cv_cc_deprecated_'$cache`\" = yes"; then
874 AC_DEFINE_UNQUOTED(AS_TR_CPP([DEPRECATED_$1]), 1, [Whether $1 is deprecated])
882 ])dnl end of ACX_FUNC_DEPRECATED
884 dnl check if select and nonblocking sockets actually work.
885 dnl Needs fork(2) and select(2).
886 dnl defines NONBLOCKING_IS_BROKEN, and if that is true multiple reads from
887 dnl a nonblocking socket do not work, a new call to select is necessary.
888 AC_DEFUN([ACX_CHECK_NONBLOCKING_BROKEN],
890 AC_MSG_CHECKING([if nonblocking sockets work])
891 if echo $target | grep mingw32 >/dev/null; then
892 AC_MSG_RESULT([no (windows)])
893 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).])
902 #ifdef HAVE_SYS_TYPES_H
903 #include <sys/types.h>
905 #ifdef HAVE_SYS_SOCKET_H
906 #include <sys/socket.h>
908 #ifdef HAVE_NETINET_IN_H
909 #include <netinet/in.h>
911 #ifdef HAVE_ARPA_INET_H
912 #include <arpa/inet.h>
927 struct sockaddr_in a;
928 /* test if select and nonblocking reads work well together */
930 fork child to send 10 messages.
932 then try to nonblocking read the 10 messages
933 then, nonblocking read must give EAGAIN
936 port = 12345 + (time(0)%32);
937 sfd = socket(PF_INET, SOCK_DGRAM, 0);
942 memset(&a, 0, sizeof(a));
943 a.sin_family = AF_INET;
944 a.sin_port = htons(port);
945 a.sin_addr.s_addr = inet_addr("127.0.0.1");
946 if(bind(sfd, (struct sockaddr*)&a, sizeof(a)) < 0) {
950 if(fcntl(sfd, F_SETFL, O_NONBLOCK) == -1) {
955 cfd = socket(PF_INET, SOCK_DGRAM, 0);
957 perror("client socket");
961 if(bind(cfd, (struct sockaddr*)&a, sizeof(a)) < 0) {
962 perror("client bind");
965 a.sin_port = htons(port);
967 /* no handler, causes exit in 10 seconds */
970 /* send and receive on the socket */
971 if((p=fork()) == 0) {
972 for(i=0; i<num; i++) {
973 if(sendto(cfd, &i, sizeof(i), 0,
974 (struct sockaddr*)&a, sizeof(a)) < 0) {
989 if(select(sfd+1, &rset, NULL, NULL, NULL) < 1) {
995 if(recv(sfd, &x, sizeof(x), 0) != sizeof(x)) {
1003 /* now we want to get EAGAIN: nonblocking goodness */
1005 recv(sfd, &x, sizeof(x), 0);
1006 if(errno != EAGAIN) {
1007 perror("trying to recv again");
1010 /* EAGAIN encountered */
1018 AC_MSG_RESULT([yes])
1021 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).])
1023 AC_MSG_RESULT([crosscompile(yes)])
1026 ])dnl End of ACX_CHECK_NONBLOCKING_BROKEN
1028 dnl Check if mkdir has one or two arguments.
1029 dnl defines MKDIR_HAS_ONE_ARG
1030 AC_DEFUN([ACX_MKDIR_ONE_ARG],
1032 AC_MSG_CHECKING([whether mkdir has one arg])
1036 #ifdef HAVE_WINSOCK2_H
1037 #include <winsock2.h>
1039 #ifdef HAVE_SYS_STAT_H
1040 #include <sys/stat.h>
1043 (void)mkdir("directory");
1046 AC_DEFINE(MKDIR_HAS_ONE_ARG, 1, [Define if mkdir has one argument.])
1050 ])dnl end of ACX_MKDIR_ONE_ARG
1052 dnl Check for ioctlsocket function. works on mingw32 too.
1053 AC_DEFUN([ACX_FUNC_IOCTLSOCKET],
1056 AC_MSG_CHECKING(for ioctlsocket)
1057 AC_LINK_IFELSE([AC_LANG_PROGRAM([
1058 #ifdef HAVE_WINSOCK2_H
1059 #include <winsock2.h>
1062 (void)ioctlsocket(0, 0, NULL);
1065 AC_DEFINE(HAVE_IOCTLSOCKET, 1, [if the function 'ioctlsocket' is available])
1066 ],[AC_MSG_RESULT(no)])
1067 ])dnl end of ACX_FUNC_IOCTLSOCKET
1069 dnl detect malloc and provide malloc compat prototype.
1070 dnl $1: unique name for compat code
1071 AC_DEFUN([ACX_FUNC_MALLOC],
1073 AC_MSG_CHECKING([for GNU libc compatible malloc])
1074 AC_RUN_IFELSE([AC_LANG_PROGRAM(
1075 [[#if defined STDC_HEADERS || defined HAVE_STDLIB_H
1080 ]], [ if(malloc(0) != 0) return 1;])
1082 [AC_MSG_RESULT([no])
1084 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] ,
1085 [AC_MSG_RESULT([yes])
1086 AC_DEFINE([HAVE_MALLOC], 1, [If have GNU libc compatible malloc])],
1087 [AC_MSG_RESULT([no (crosscompile)])
1089 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] )
1092 dnl Define fallback for fseeko and ftello if needed.
1093 AC_DEFUN([AHX_CONFIG_FSEEKO],
1096 #define fseeko fseek
1097 #define ftello ftell
1098 #endif /* HAVE_FSEEKO */
1101 dnl Define RAND_MAX if not defined
1102 AC_DEFUN([AHX_CONFIG_RAND_MAX],
1105 #define RAND_MAX 2147483647
1109 dnl Define MAXHOSTNAMELEN if not defined
1110 AC_DEFUN([AHX_CONFIG_MAXHOSTNAMELEN],
1112 #ifndef MAXHOSTNAMELEN
1113 #define MAXHOSTNAMELEN 256
1117 dnl Define IPV6_MIN_MTU if not defined
1118 AC_DEFUN([AHX_CONFIG_IPV6_MIN_MTU],
1120 #ifndef IPV6_MIN_MTU
1121 #define IPV6_MIN_MTU 1280
1122 #endif /* IPV6_MIN_MTU */
1125 dnl provide snprintf, vsnprintf compat prototype
1126 dnl $1: unique name for compat code
1127 AC_DEFUN([AHX_CONFIG_SNPRINTF],
1129 #ifndef HAVE_SNPRINTF
1130 #define snprintf snprintf_$1
1131 #define vsnprintf vsnprintf_$1
1133 int snprintf (char *str, size_t count, const char *fmt, ...);
1134 int vsnprintf (char *str, size_t count, const char *fmt, va_list arg);
1135 #endif /* HAVE_SNPRINTF */
1138 dnl provide inet_pton compat prototype.
1139 dnl $1: unique name for compat code
1140 AC_DEFUN([AHX_CONFIG_INET_PTON],
1142 #ifndef HAVE_INET_PTON
1143 #define inet_pton inet_pton_$1
1144 int inet_pton(int af, const char* src, void* dst);
1145 #endif /* HAVE_INET_PTON */
1148 dnl provide inet_ntop compat prototype.
1149 dnl $1: unique name for compat code
1150 AC_DEFUN([AHX_CONFIG_INET_NTOP],
1152 #ifndef HAVE_INET_NTOP
1153 #define inet_ntop inet_ntop_$1
1154 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
1158 dnl provide inet_aton compat prototype.
1159 dnl $1: unique name for compat code
1160 AC_DEFUN([AHX_CONFIG_INET_ATON],
1162 #ifndef HAVE_INET_ATON
1163 #define inet_aton inet_aton_$1
1164 int inet_aton(const char *cp, struct in_addr *addr);
1168 dnl provide memmove compat prototype.
1169 dnl $1: unique name for compat code
1170 AC_DEFUN([AHX_CONFIG_MEMMOVE],
1172 #ifndef HAVE_MEMMOVE
1173 #define memmove memmove_$1
1174 void *memmove(void *dest, const void *src, size_t n);
1178 dnl provide strlcat compat prototype.
1179 dnl $1: unique name for compat code
1180 AC_DEFUN([AHX_CONFIG_STRLCAT],
1182 #ifndef HAVE_STRLCAT
1183 #define strlcat strlcat_$1
1184 size_t strlcat(char *dst, const char *src, size_t siz);
1188 dnl provide strlcpy compat prototype.
1189 dnl $1: unique name for compat code
1190 AC_DEFUN([AHX_CONFIG_STRLCPY],
1192 #ifndef HAVE_STRLCPY
1193 #define strlcpy strlcpy_$1
1194 size_t strlcpy(char *dst, const char *src, size_t siz);
1198 dnl provide gmtime_r compat prototype.
1199 dnl $1: unique name for compat code
1200 AC_DEFUN([AHX_CONFIG_GMTIME_R],
1202 #ifndef HAVE_GMTIME_R
1203 #define gmtime_r gmtime_r_$1
1204 struct tm *gmtime_r(const time_t *timep, struct tm *result);
1208 dnl provide w32 compat definition for sleep
1209 AC_DEFUN([AHX_CONFIG_W32_SLEEP],
1212 #define sleep(x) Sleep((x)*1000) /* on win32 */
1213 #endif /* HAVE_SLEEP */
1216 dnl provide w32 compat definition for usleep
1217 AC_DEFUN([AHX_CONFIG_W32_USLEEP],
1220 #define usleep(x) Sleep((x)/1000 + 1) /* on win32 */
1221 #endif /* HAVE_USLEEP */
1224 dnl provide w32 compat definition for random
1225 AC_DEFUN([AHX_CONFIG_W32_RANDOM],
1228 #define random rand /* on win32, for tests only (bad random) */
1229 #endif /* HAVE_RANDOM */
1232 dnl provide w32 compat definition for srandom
1233 AC_DEFUN([AHX_CONFIG_W32_SRANDOM],
1235 #ifndef HAVE_SRANDOM
1236 #define srandom(x) srand(x) /* on win32, for tests only (bad random) */
1237 #endif /* HAVE_SRANDOM */
1240 dnl provide w32 compat definition for FD_SET_T
1241 AC_DEFUN([AHX_CONFIG_W32_FD_SET_T],
1243 /* detect if we need to cast to unsigned int for FD_SET to avoid warnings */
1244 #ifdef HAVE_WINSOCK2_H
1245 #define FD_SET_T (u_int)
1251 dnl Remove an extension flag from CFLAGS, define replacement to be made.
1252 dnl Used by ACX_STRIP_EXT_FLAGS.
1253 dnl $1: the name of the flag, for example -D_GNU_SOURCE.
1254 AC_DEFUN([ACX_CFLAGS_STRIP],
1256 if echo $CFLAGS | grep " $1" >/dev/null 2>&1; then
1257 CFLAGS="`echo $CFLAGS | sed -e 's/ $1//g'`"
1258 AC_DEFINE(m4_bpatsubst(OMITTED_$1,[[-=]],_), 1, Put $1 define in config.h)
1262 dnl Remove EXT flags from the CFLAGS and set them to be defined in config.h
1263 dnl use with ACX_DETERMINE_EXT_FLAGS.
1264 AC_DEFUN([ACX_STRIP_EXT_FLAGS],
1266 AC_MSG_NOTICE([Stripping extension flags...])
1267 ACX_CFLAGS_STRIP(-D_GNU_SOURCE)
1268 ACX_CFLAGS_STRIP(-D_BSD_SOURCE)
1269 ACX_CFLAGS_STRIP(-D__EXTENSIONS__)
1270 ACX_CFLAGS_STRIP(-D_POSIX_C_SOURCE=200112)
1271 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE=600)
1272 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE_EXTENDED=1)
1273 ACX_CFLAGS_STRIP(-D_ALL_SOURCE)
1274 ACX_CFLAGS_STRIP(-D_LARGEFILE_SOURCE=1)
1275 ]) dnl End of ACX_STRIP_EXT_FLAGS
1277 dnl define one omitted flag for config.h
1278 dnl $1: flag name. -D_GNU_SOURCE
1279 dnl $2: replacement define. _GNU_SOURCE
1280 dnl $3: define value, 1
1281 AC_DEFUN([AHX_CONFIG_FLAG_OMITTED],
1282 [#if defined($1) && !defined($2)
1286 dnl Wrapper for AHX_CONFIG_FLAG_OMITTED for -D style flags
1287 dnl $1: the -DNAME or -DNAME=value string.
1288 AC_DEFUN([AHX_CONFIG_FLAG_EXT],
1289 [AHX_CONFIG_FLAG_OMITTED(m4_bpatsubst(OMITTED_$1,[[-=]],_),m4_bpatsubst(m4_bpatsubst($1,-D,),=.*$,),m4_if(m4_bregexp($1,=),-1,1,m4_bpatsubst($1,^.*=,)))
1292 dnl config.h part to define omitted cflags, use with ACX_STRIP_EXT_FLAGS.
1293 AC_DEFUN([AHX_CONFIG_EXT_FLAGS],
1294 [AHX_CONFIG_FLAG_EXT(-D_GNU_SOURCE)
1295 AHX_CONFIG_FLAG_EXT(-D_BSD_SOURCE)
1296 AHX_CONFIG_FLAG_EXT(-D__EXTENSIONS__)
1297 AHX_CONFIG_FLAG_EXT(-D_POSIX_C_SOURCE=200112)
1298 AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE=600)
1299 AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE_EXTENDED=1)
1300 AHX_CONFIG_FLAG_EXT(-D_ALL_SOURCE)
1301 AHX_CONFIG_FLAG_EXT(-D_LARGEFILE_SOURCE=1)
1304 dnl check if memcmp is using signed characters and replace if so.
1305 AC_DEFUN([ACX_CHECK_MEMCMP_SIGNED],
1306 [AC_MSG_CHECKING([if memcmp compares unsigned])
1307 AC_RUN_IFELSE([AC_LANG_SOURCE([[
1313 char a = 255, b = 0;
1314 if(memcmp(&a, &b, 1) < 0)
1318 ]])], [AC_MSG_RESULT([yes]) ],
1319 [ AC_MSG_RESULT([no])
1320 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes])
1322 ], [ AC_MSG_RESULT([cross-compile no])
1323 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes])
1327 dnl define memcmp to its replacement, pass unique id for program as arg
1328 AC_DEFUN([AHX_MEMCMP_BROKEN], [
1329 #ifdef MEMCMP_IS_BROKEN
1330 #include "compat/memcmp.h"
1331 #define memcmp memcmp_$1
1332 int memcmp(const void *x, const void *y, size_t n);
1336 dnl ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family
1337 AC_DEFUN([ACX_CHECK_SS_FAMILY],
1338 [AC_CHECK_MEMBER([struct sockaddr_storage.ss_family], [], [
1339 AC_CHECK_MEMBER([struct sockaddr_storage.__ss_family], [
1340 AC_DEFINE([ss_family], [__ss_family], [Fallback member name for socket family in struct sockaddr_storage])
1341 ],, [AC_INCLUDES_DEFAULT
1342 #ifdef HAVE_NETINET_IN_H
1343 #include <netinet/in.h>
1345 #ifdef HAVE_SYS_SOCKET_H
1346 #include <sys/socket.h>
1351 #ifdef HAVE_ARPA_INET_H
1352 #include <arpa/inet.h>
1355 ], [AC_INCLUDES_DEFAULT
1356 #ifdef HAVE_NETINET_IN_H
1357 #include <netinet/in.h>
1359 #ifdef HAVE_SYS_SOCKET_H
1360 #include <sys/socket.h>
1365 #ifdef HAVE_ARPA_INET_H
1366 #include <arpa/inet.h>